﻿using System;                           // 引入System命名空间
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace 重写
{
    class Program
    {
        static void Main(string[] args)
        {
            A a = new B();
            a.Print();

            B.count = 1;
        }
    }
}
